3M Bumpon SJ5532 Black Bumper/Spacer Pad - Cylindrical Shaped Bumper - 1.88 in Width x 0.66 in Height - 18477 [Price is per CASE] - Securing Straps - Amazon.com
China Factory White and Black Round Plastic Derlin Hollow Cylindrical Spacer - China Hollow Cylindrical Spacer, White and Black Spacer